Which statement about ICD-10 coding is described in the material as true?

• A. It is used for billing purposes by insurance companies.
• B. It is used to train clinicians online.
• C. It is a tool for patient cancellation notices.
• D. It has no relationship to billing.

Answer: (A)

ICD-10 coding serves as the standardized language for documenting diagnoses to support billing and reimbursement. Insurance companies rely on these diagnosis codes to determine coverage and payment for services, so accurate coding directly affects claims processing and revenue. While clinicians may encounter ICD-10 in training or use it for quality data or reporting, its primary function is not training or patient communications like cancellation notices. It does have a clear relationship to billing, unlike the other options.